* {
    padding: 0;
    margin: 0;
    list-style-type: none;
    text-decoration: none;
}

body{
    /* 居中 */
    background-image: url("../photo/shoes0.gif");
    background-size: cover;
    background-repeat: no-repeat;
    margin: 0;
    background-position: top;
    background-attachment: fixed;
    overflow-y: hidden;
}
/*大体*/
#Download1 {
    position: relative;
}

/*头部*/
h1 {
    width: 100%;
    height:60px;
    text-align: center;
    background-color: black;
    color: white;
    font-family: 楷体;
    font-size: 50px;
}

/*登录表格*/
#Form {
    margin: 0 auto;
    width: 430px;
    border: 1px solid #a59d9d;
    text-align: center;
    margin-top: 150px;
    background-color: aliceblue;
    opacity: 0.97;
    border-radius: 8px;
}
form p {
    margin: 10px;
    font-size: 18px;
}
.aa {
    height: 20px;
    width: 200px;
}
#email {
    display: block;
    text-align: center;
    font-size: 15px;
    margin: 10px;
    border-bottom: 1px solid black;
    color: gray;
}
#download,#register {
    margin-bottom: 10px;
    width: 100px;
    height: 30px;
}
#captcha_img{
    position: relative;
    margin: 5px auto;
    margin-left: 18px;
}


/*底部*/
#foot {
    width: 100%;
    height: 108px;
    text-align: center;
    border-top: 2px solid rgb(156, 152, 152);
    position: absolute;
    top: 650px; /*想要用top left之类的定位 就肯定要加上上面的position才行*/

    background-color: aliceblue;
    opacity: 0.97;
}